Topic
Polarography
About: Polarography is a research topic. Over the lifetime, 4772 publications have been published within this topic receiving 75478 citations.
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TL;DR: In this article, a Nafion-coated mercury thin-film working electrode is placed in a specially designed small-volume sonovoltammetric cell, where the preparation and curing procedure for the Nafions film on a glassy carbon electrode substrate as well as ultrasound-enhanced mercury deposition through the nafion film are optimized.
Abstract: The high mass transport caused by ultrasonic radiation in the preconcentration of trace metal species in anodic stripping voltammetry (ASV), leads to an order of magnitude enhancement in sensitivity. A Nafion-coated mercury thin-film working electrode is placed in a specially designed small-volume sonovoltammetric cell. The preparation and curing procedure for the Nafion film on a glassy carbon electrode substrate as well as ultrasound-enhanced mercury deposition through the Nafion film are optimized. The resulting electrode assembly is stable under ultrasonic irradiation. Optical microscopy observations show the formation of closely spaced mercury droplets of micrometer dimensions under the Nafion film. The performance characteristics of ultrasound-enhanced ASV at the Nafion-coated mercury thin-film electrode are studied in detail. The detection limit obtained for lead and cadmium test species is 3 × 10-11 M (30 s preconcentration in the presence of ultrasound). A relative standard deviation of 1.2% is o...
69 citations
TL;DR: In this article, a novel modified glassy carbon electrode with a film of nanodiamond-graphite/chitosan was constructed and used for the sensitive voltammetric determination of azathioprine (Aza).
69 citations
TL;DR: In this paper, the electrochemical oxidation of four 1,2-ene-diamines is studied on mercury and platinum electrodes in acetonitrile and benzonitrile.
68 citations
TL;DR: In this paper, the 1e reduction of titanocene dichloride (η5-Cp2TiCl2) in various solvents has been examined in detail by polarography, voltammetry on a disk electrode, and linear potential sweep voltametric.
68 citations
TL;DR: The oxidation of cysteine has been studied at platinum electrodes by chronopotentiometry, polarography, and controlledpotential electrolysis as mentioned in this paper, and the major product was found to be cystine, but the electrode reaction(s) is kinetically complex and is greatly suppressed by the formation of an oxide film or surface oxygen.
68 citations